from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of or relating to the spleen.
  • adj. Affected or marked by ill humor or irritability.
  • n. A person regarded as irritable.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. bad-tempered, irritable, peevish, spiteful, habitually angry
  • adj. relating to the spleen
  • n. A person affected with spleen.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Affected with spleen; malicious; spiteful; peevish; fretful.
  • n. A person affected with spleen.

from The Century Dictionary and Cyclopedia

  • Of or pertaining to the spleen; splenic.
  • Affected with spleen; ill-humored; peevish; fretful; spiteful.
  • Synonyms Sulky, Morose, etc. (see sullen), irritable, pettish, waspish, snappish, cross, crusty, testy.
  • n. The spleen.
  • n. A person affected with spleen.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. of or relating to the spleen
  • adj. very irritable


Late Latin splēnēticus, from Latin splēn, spleen; see spleen.
(American Heritage® Dictionary of the English Language, Fourth Edition)
The adjective form of spleen, from Late Latin spleneticus. Anger was traditionally believed to originate from the fluids of the spleen. (Wiktionary)



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  • I love your definition, whichbe!

    June 20, 2009

  • Ahahaha, this word makes me giggle madly. It's as if splendid mutated into some sort of diabolical, electromagnetic force.

    August 15, 2008